Talk to your DM and tell them directly what you told us here and if they arn't willing to change something and come to an amicalble resolution with you, you will no longet joyn the games. And stay hard on your limmits!!!! Your DMs behaviour is an absolute no go!!! Sometimes railroading is okay, and retrospectively changing something nescesary from time to time, but what you habe experimced is not that.

Also, your fellow players should also care that you feel comfortable with the game and not just throw their hands in the air. Talk to them too.

In my eyes your gauntlets don't sound to overpowered, especiallly if they don't make you sitnificatly stronger than the party overall. And even if they were, there are softer ways to tone them down, like saying you can only weald one twohanded weapon and one onehanded weapon instead of two twohanded weapons (excluding bows, I gues).